Lubricating device for internal-combustion engines.



R. L'BALZ.

LUBRICATING DEVICE FOR INI'EIINIII COMBUSTION ENGINES.

APPLlcAnoN FILED FEB.11. 1915.

1,283,622. Patented Nov. 5, 1918.

UNiTnD STATES PATE T @C ROBERT J. B ALZJ 0F SYRACUSE, NEW YORK, ASSIGNOR0F ONE-HALF T0 GERTRUDE C.

MEYER, OF SYRACUSE, NEW YORK.

LUBRICATING DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Original application led April 9, 1914, Serial No. 830,610. Divided andthis app1ication led February 17,

Specification of Letters Patent.

Patented Nov. 5, 1918.

1915. Serial No. 8,963.

To all 'whom t may concern:

.Be it known that I, ROBERT J. BALZ, 'a citizen ofthe United States, andresident' of Syracuse, in the county of Onondaga, in the State of NewYork, have invented new and useful lfmprovements in Lubricating Devicesfor Internal-Combustion Engines, of which the following, taken inconnection with the accompanying drawings, is a full, clear, and exactdescription.

This invention relates to certain improvements in lubricating devicesfor internal combustion enginesof the class set forth in my pendingapplication No. 830,610, of which this is a division.

The main object is to provide force feed lubricating means locatedwithin the closed crank case forv distributing oil to the variousbearings within or upon said crank case, and also to the cylinder andpiston movable therein.

Another object is to provide a sight feed as a part of the lubricatingsystem to enable the operator to determine at a glance whether or notoil is being fed to the various bearings communicating with said system.

Other objects and uses will be brought outV in the followingdescription.

In the drawings Figure 1 is a vertical sectional view of a portion ofthe crank case and oil. chamber together with the force feed pump andadjacent portions of the lubricating system.

Fig. 2 is a vertical sectional view through the same crank case andhollow timer-shaft into which the oil is fed by the pump fordistribution to the bearings of said shaft and also to the cam bearingsmounted thereon.

The base of the crank case -2 is provided with an oil containing chamber-A- which is separate from the underlying gasolene chamber by ahorizontal partition 0;- and within this oil containing chamber and uponthe partition -ais mounted an oil sides and is adapted to be driven fromthe crank shaft (not shown) through the medium of suitable gears, one ofwhich is partly shown at 30- in Fig. 2, these gears being timed to drivethe cam shaft at onehalf the speed of the crank shaft. This cam shafthas a pair of cams 31- and 3Q- rigid thereon for operating the inlet andexhaust valves (not shown) through the medium of rock arms -33- and S4-having rollers -35- which bear upon the peripheries of their respectivecams -32-.

The pump -B- is provided with an in-A let pipe'-0Z- and outlet ports-eand --f-, the outlet port ecommunicating with an annular space Q- inthe upper portion of the pump case through which the cam shaft -28-passes, Vsaid shaft being provided with one or more radial openings 71.-communicating with the annular space -g-, so that any oil which isforced through the outlet port -eenters the entire chamber -28- of thehollow shaft 2S- This shaft -28 is also provided with radial outletports arranged to distribute oil tothe bearings -29- andV also to thecontacting surfaces between the cams -31- and -32- and their rollers-3`5-, the outlet opening -fvlnearest the pump case being adapted todistribute oil to the wrist pin of the Vcrank shaft '(not shown);

It is evident from the foregoing descrip` tion that under this forcefeed of the pump -B the oil may be driven not only to the severalbearings specified, but also to the bearings for the crank shaft in thesides of the case, becauseV the entire oiling system is confined withinsaid case, the ends of the shaft 28- being closed by plugs -40- toretain a quantity of oil therein as supplied by the ump.

The ranch outlet port -f is connected by a pipe -fto an external sighttube -jhaving a return flow passage -y"- leading back into the interiorof the oil reservoir within a case -con the adjacent side of crank caseso that the attendant may see at aV glance whether or not thev cil isvfeeding through the vpump and to theseveral bear- A-, said tube beingsupported ings leading from the tubular cam shaft The opening in theupper portion of the pump case through which the cam shaft *2%* extendsforms a journal bearing for the adjacent portion of said shaft atopposite sides of the annular passage -g, which it is evident Will belubricated from the oil in said passage.

It will be obscryed that two of the oil passages z'- are located betweenthe outer ends of the cams M31- and -32- and adjacent sides of the crankcase -2- so that the Centrifugal throw of the oil passing therethroughwill cause it to bc distributed to the peripheries of the cams` and alsoto the journal bearings for the rollers 35- and to other mechanismsWhich may be located Within the oil. chamber of the crank case.

The main feature of my invention, hou'- ever, consists in locating aforce feed pump Within the inclosed oil chamber of the crank ease andconnecting it directly to the hollow cam shaft which extends from sideto side of the crank case and permits a distribution of the oil to allthe mechanisms Which may be located Within the crank case including thewrist pins of the crank shaft, the feed being partly by centrifugalforce and partly under pressure of the pump Which affords a morereliable lubricating system4 Wholly concealed Within the crank case ofthe engine, except that the sight tube is on the outside of the crankcase Where it is easily visible to the .operator to deterniine thecondition of the force feed system.

ln operation, the oil which is placed in the chamber -A- of the crankcase is drawn into the pump through the inlet tube -5Z and is forcedcentrifugally by the. pump gears YQ-- outu'ardly through the outlet-eand into the interior of the tubular shaft -28- from Which it is disAtributed partly by centrifugal force to the various mechanisms Withinthe crank case, a part of the oil being carried out by the conduit -ftothe sight. tube j and is returned therefrom to the reservoir ;\,v.

That l claim is:

l. The combination With a crank case of an engine7 a. rotary doublepiston pump mounted vertically Within said crank case, said pumpprovided with an inlet pipe and outlet ports, one of said portscommunicating with an annular space formed in the upper portion of saidpump7 a cam shaft journaled horizontally Within said crank case andextending through the annular space in the upper end of said pump, saidshaft provided with a plurality of spaced radial outlet ports one ofWhich communicates With the ani'iular space at the upper end of saidpump whereby oil may be fed to the interior of the cran shaft and may beexpelled. therefrom through its ports and means carried by the shaft forthe operation of said pump upon the rot-ation of the shaft.

2. rllhe combination with a crank case of an engine of a rotary doublepiston pump mounted vertically Within said case7 said pump provided'with an inletl pipe and outlet ports, said pump also provided in itsupper end With an annular space communicating with one of the outletports, a hollow shaft journaled horizontally vWithin said crank case andextending through the annular space of the pump, said shaft providedwith plurality of spaced radial openings one of which communicates withthe annular space of the pump whereby oil may be fed to the interior ofthe shaft and forced tl'ierefrom upon the bearings of the latter7 andmeans carried by the shaft and pump whereby upon the rotation of theshaft the pump will be actuated.

in Witnessl whereof l have hereunto set my hand this 8th day ofFebruary, 1915.

ROBERT J. BALZ.

lVitnesses HERTHA GLAWATZ, Kum? J. GLAWA'PZ.

Copies of this patent :may be obtained for five cents each, byaddressing the Commissioner of Patents. Washington, D. C.

